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The Dolphins' Mark Duper on the bench during the team's 38-30 loss against the San Diego Chargers on Dec. 16, 1991. Duper retired after the 1992 season.

Updated at 12:46 AM EDT on Saturday, Nov 9, 2013

Former Miami Dolphins star Mark Duper confirmed to NBC 6 that he has tested positive for chronic traumatic encephalopathy, making him the latest retired NFL player to come down with the concussion-related brain disease.

Duper, 54, said he has been having headaches and his body hurts all the time, so he went to UCLA to get tested.

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Doctors told him Friday afternoon the tests were positive for CTE, a degenerative brain disease found in athletes with a history of head trauama. Its symptoms can include depression and memory loss.

“The way I look at it, I know what I’m dealing with,” Duper said Friday night.